"So we have talked three sensor modalities, they are cameras, radars, and LADARS. Cameras are the only sensor that can also sense appearance, texture in addition to sensing shape. The other two sensors are primarily focused on sensing shape. Each sensor modality is anticipated to grow, cameras would be growing towards added resolution. We are working with a camera with imagery suppliers on a new design by 2019, we'll have 7.4 megapixel imagers for supporting autonomous driving."

Basically if you use 2um pixel, then 7.4MP will use 29.6mm2 silicon which is not that big. But if you need 3.75um pixel, then you will need more than 100mm2, that becomes big. It depends on the sensing performance needed for ADAS.